Component arrangement for a wind turbine, method of assembly and operating method

Abstract

A component arrangement for a wind turbine including an outer component, an inner component arranged within the outer component, and a rolling bearing pair, which has a first rolling bearing and a second rolling bearing arranged in a manner adjusted relative to one another and which is preloaded by means of a clamping force. The inner component and the outer component are mounted so as to be rotatable relative to one another about an axis of rotation by means of the rolling bearing pair. The component arrangement also includes a pressure sensor for determining a preload of the rolling bearing pair, which is arranged in a flow of the clamping force. A method for assembling a component arrangement, a wind turbine having a component arrangement, and a method for operating a wind turbine is also disclosed.

What is claimed is: 
     
         1 . A component arrangement for a wind turbine comprising:
 an outer component;   an inner component arranged within the outer component; and   a rolling bearing pair, which has a first rolling bearing and a second rolling bearing arranged in a manner adjusted relative to one another and which is preloaded by means of a predefined clamping force;   wherein the inner component and the outer component are mounted so as to be rotatable relative to one another about an axis of rotation by means of the rolling bearing pair, and   wherein the component arrangement also comprises a pressure sensor for determining a preload of the rolling bearing pair, said pressure sensor being arranged in a flow of the clamping force.   
     
     
         2 . The component arrangement as claimed in  claim 1 , wherein the component arrangement comprises, for preloading the rolling bearing pair by means of the predefined clamping force, at least one of a first clamping device acting on the first rolling bearing and a second clamping device acting on the second rolling bearing. 
     
     
         3 . The component arrangement as claimed in  claim 2 , wherein the pressure sensor is arranged on a side of a rolling bearing facing away from the at least one of the first clamping device and the second clamping device. 
     
     
         4 . The component arrangement as claimed in  claim 1 , wherein the pressure sensor is formed as a thin-film sensor. 
     
     
         5 . The component arrangement as claimed in  claim 4 , wherein the thin-film sensor is a piezo-electric or piezo-resistive sensor layer. 
     
     
         6 . The component arrangement as claimed in  claim 4 , wherein the thin-film sensor is formed as an independent component. 
     
     
         7 . The component arrangement as claimed in  claim 6 , wherein the thin-film sensor is a layer carrier for the sensor layer independent of other constituent parts of the component arrangement. 
     
     
         8 . The component arrangement as claimed in  claim 1 , wherein the component arrangement has an evaluation device for evaluating measurement signals of the pressure sensor. 
     
     
         9 . The component arrangement as claimed in  claim 1 , wherein the component arrangement has at least a first pressure sensor arranged at the first rolling bearing and a second pressure sensor arranged at the second rolling bearing. 
     
     
         10 . The component arrangement as claimed in  claim 1 , wherein the component arrangement comprises at least three pressure sensors 
     
     
         11 . The component arrangement as claimed in  claim 10 , wherein the at least three pressure sensors are arranged in a plane oriented transversely to the axis of rotation. 
     
     
         12 . The component arrangement as claimed in  claim 1 , wherein the component arrangement is formed as a constituent part for a power train of the wind turbine. 
     
     
         13 . The component arrangement as claimed in  claim 1 , wherein the component arrangement is formed as a rotor bearing, as a transmission, as a generator, as part of a rotor bearing, as part of a transmission, or as part of a generator. 
     
     
         14 . A method for assembling a component arrangement as claimed in  claim 1 , said method comprising:
 calibrating at least one pressure sensor of the component arrangement;   preloading the rolling bearing pair of the component arrangement with a predefined clamping force;   determining an actual value for a preload of the rolling bearing pair by means of the at least one pressure sensor;   comparing the actual value with a predefined tolerance range around a target value for the preload; and   if the actual value lies outside the tolerance range, adjusting the clamping force.   
     
     
         15 . The method as claimed in  claim 14 , wherein the at least one pressure sensor is calibrated in an assembly position of the component arrangement with vertically arranged axis of rotation without application of a clamping force with utilization of a known mass of the inner component and/or of the outer component and/or of one of the two rolling bearings and/or both rolling bearings. 
     
     
         16 . A wind turbine comprising a component arrangement as claimed in  claim 1 . 
     
     
         17 . The wind turbine as claimed in  claim 16 , wherein the wind turbine further comprises an operation monitoring system for identifying operational disruptions. 
     
     
         18 . The wind turbine as claimed in  claim 17 , wherein the operating monitoring system comprises an evaluation device for evaluating measurement signals of at least one pressure sensor of the component arrangement or is connected to or connectable to an evaluation device for evaluating measurement signals of at least one pressure sensor of the component arrangement. 
     
     
         19 . A method for operating a wind turbine according to  claim 16 , wherein the method comprises:
 determining an actual value for the preload of the rolling bearing pair by means of the pressure sensor arranged in the flow of the clamping force;   comparing the actual value with a predefined first reference range around a target value for the preload; and   interrupting the operation of the wind turbine when the actual value lies outside the first reference range.   
     
     
         20 . The method as claimed in  claim 19 , wherein the determined actual value for the preload is compared with a predefined second reference range around the target value for the preload, and wherein the clamping force is adjusted during a subsequent operation interruption of the wind turbine when the actual value lies outside the second reference range. 
     
     
         21 . The method as claimed in  claim 20 , wherein the predefined second reference range is a sub-range of the first reference range. 
     
     
         22 . The method as claimed in  claim 20 , wherein the subsequent operation interruption of the wind turbine is a routinely occurring operation interruption of the wind turbine.